A correspondent on the RSPB online forum referred to a 'Cock Blackbird' and was surprised to find his post amended to '**** Blackbird'.
RSPB say that they have a filter to remove 'offensive words'
Apparently, however, Great Tits gets through unchallenged.
Imagine this applied to Folk! Jake Thackrey's 'Bantam ****' springs to mind, also....
At home there's sheep and cows
That stand around the house,
And a fine **** for my yellow yorlin.....

Must be worth a song!

FC